EP 0980113 A2 2000-02-16 - Antenna device

Title (en)

Title (de)

Title (fr)

Publication

Application

Priority

JP 22634198 A 19980810

Abstract (en)

An antenna device according to the present invention comprises a flat ground conductor; a first flat radiation conductor disposed against the flat ground conductor interposing a first dielectric layer; a first short-circuit conductor connecting an end of the first flat radiation conductor and the flat ground conductor; a second flat radiation conductor disposed partly against an opposite side of the first flat radiation conductor to its other side facing the ground conductor interposing a second dielectric layer; a second short-circuit conductor connecting an end of the second flat radiation conductor and the flat ground conductor; and a supply point disposed on the first flat radiation conductor. With this structure, the first flat radiation conductor and the second flat radiation conductor are disposed partly against each other. Which enables more size reduction than that of conventional antennas in operating at the same resonant frequency with a conventional antenna. <IMAGE> <IMAGE>